[T3] Breaking the quiet: Jiggly steering when braking...why?

[Toby Erkson <air_cooled_nut@pobox.com>]

<x-flowed>Ok, this has been going on and I can't figure it out.  '72 Squareback, 
recent 4-wheel alignment per Bentley, 5.5" after-market rims w/20psi up 
front (205 series), rotors adjusted and free-play feels correct (I 
thought this would fix it...nope), torsion arms adjusted (they were 
loose), and upper steering adjustment made to take slack out of 
roller/worm gear.  There is no wheel wobble at any speed (tires *seem* 
properly balanced).  But if I get on the brakes the front end will 
wobble much like a wheel out of balance when you're cruising down the 
freeway.  This evening I was stopping from 40mph down hill and got the 
wobble.  No clunking.  Car still tracks fairly straight for getting 
wobbly.  A VERY GENTLE braking will not cause the wobble feeling.

What to check?

--
 Toby Erkson  --  http://www.icbm.org/
 '72 VW Squareback Darksider, 5-speed, 2.0L, rag top
 Sold to Purdue Univ.: '72 VW Squareback Lightsider, automatic, FI, sunroof
 '95 VW Jetta ~ SCCA Solo 2 EP #3; '73 Porsche 914; '81 Honda Gold Wing
 Portland, Oregon

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